24
FR-20 & FR-30 Feeder Installation/Maintenance
(Feeders for most product are tooled with approximately
1
/
8
" gap,
but for some small product the gap is less; consult your as-built
documentation.) Adjust tooling ring up or down if necessary.
Step 7ÑReplace Chain & Cover.
Install drive chain. Inspect chain
tension. Replace cover and connect power and air. Feeder is ready
for use.
Torque Limiter: Replacement/Adjustment
The torque limiter allows the motor to slip harmlessly in the event
of a parts jam. Severe humidity or dryness, lubricants or surface
corrosion on bushings or the torque limiter's drive sprocket may
reduce the effectiveness of the torque limiter. The torque limiter
should be inspected and adjusted if the rim is free wheeling.
FR-20 Parts
Depending on its serial number, your FR-20 contains either a motor
sprocket or one of two types of torque limiters. For best results, use
identical replacement parts. Replacement parts by serial number
are listed for the metric FR-20 in Chapter 6, Spare Parts.
Retrofitting
a torque limiter onto a unit that has none is not required.
Replacement
Step 1ÑDisconnect Power. Disconnect power and air in such a
way to prevent accidental reactivation.
Step 2ÑGain Access.
Remove exit cover and drive chain for the
rim.
Step 3ÑRemove Torque Limiter.
Remove and disassemble torque
limiter. Inspect and replace any broken or worn parts. Observe
order of components (see Figure 5-1).
Step 4ÑAssemble Torque Limiter.
Assemble the torque limiter.
Tighten adjusting nut by hand. Do not completely flatten the disk
spring.
Step 5ÑReplace Chain Tension.
Replace the chain and inspect
chain tension (see page 22,
Adjusting Chain Tension
).
